Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cau » va cau, ve cau, di cau
x hoi » xa hoi, o hoi, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuat lanh)) ky nang ((x hoi) OR (x ho)). hieu ve cam xuc va danh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang ((x hoi) OR (x ho)). hieu ve cam xuc va danh vi cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat lanh)) ky nang ((x hoi) OR (x ho)). hieu ve cam xuc va danh vi cau tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang ((x hoi) OR (x ho)). hieu ve cam xuc va danh vi cau tren*.